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The hemodynamic definitions of pulmonary hypertension (PH) in left heart disease have recently been refined to better match the characteristics required to reflect the presence of pulmonary vascular disease. Accordingly, we tested the hypothesis that abnormalities in the stiffness of pulmonary circulation would persist after heart transplantation in patients with combined post-capillary and pre-capillary PH (Cpc-PH) in contrast to those with isolated post-capillary PH (Ipc-PH). We retrospectively analyzed right heart hemodynamics in a cohort of 295 consecutive patients with heart failure and advanced left ventricular systolic dysfunction (LVSD) before and 1 year after heart transplantation. According to their baseline hemodynamic profile, patients were classified as: 75 Cpc-PH, 111 Ipc-PH, and 98 without PH (no-PH), and 11 pre-capillary PH. One year after heart transplantation, pulmonary artery pressures, pulmonary vascular resistance and cardiac index normalized in all patients regardless of the baseline hemodynamic profile. However, pulmonary arterial compliance remained lower in Cpc-PH patients (from 1.6±1.2 at baseline to 3.7±1.4 ml/mmHg at 1 year) than in Ipc-PH (from 1.2±2.0 to 4.4±2.3 ml/mmHg) and no-PH patients (from 3.7±2.0 to 4.5±1.8 ml/mmHg); (adjusted p = 0.03 Ipc-PH vs. Cpc-PH INT<0.001). In heart failure patients with advanced LVSD, a hemodynamic profile characterized by Cpc-PH predicts the persistence of a stiffer pulmonary circulation at 1 year after heart transplantation.

[This corrects the article DOI: 10.1371/journal.pone.0188383.].

Background: Sacubitril/valsartan (S/V) is a cornerstone treatment for heart failure (HF). Beneficial effects on hospitalization rates, mortality, and left ventricular remodeling have been observed in patients with heart failure and reduced ejection fraction (HFrEF). Despite the positive results, the influence of S/V on renal function during long-term follow-up has received little attention. Aims: We investigated the long-term effects of S/V therapy on renal function in a large cohort of patients with HFrEF. Additionally, we examined the effects of the drug in patients with chronic kidney disease (CKD) compared to those with preserved renal function and identified primary risk characteristics Methods: We studied 776 outpatients with HFrEF and left ventricular ejection fraction (LVEF) <40% from an observational registry of the Italian Society of Cardiology, all receiving optimized standard-of-care therapy with S/V. The patients were included in a multicentric open-label registry from 11 Italian academic hospitals. Kidney function was evaluated at baseline, after 6 months of S/V, and at 4 years. Patients were followed-up through periodic clinical visits. Results: During a 48-month follow-up period, 591 patients remained stable and 185 patients (24%) experienced adverse events (85 deaths and 126 hospitalizations). S/V therapy marginally affects renal function during the follow-up period (estimated glomerular filtration rate (eGFR) at baseline 72.01 vs eGFR at follow-up 70.38 ml/min/m2, p = 0.01; and creatinine was 1.06 at baseline vs 1.10 at follow-up, p < 0.04). Among patients who maintained preserved renal function, 35% were in Dose 3 and 10% dropped out of S/V therapy (p < 0.006). Univariate analysis showed that Drop-out of S/V (HR 2.73 [2.01, 3.71], p < 0.001), history of previous HF hospitalization (HR 1.75 [1.30, 2.36], p < 0.001), advanced NYHA class (HR 2.14 [1.60, 2.86], p < 0.001), NT-proBNP values >1000 pg/ml (HR 1.95[1.38, 2.77], p < 0.001), furosemide dose >50 mg (HR 2.04 [1.48, 2.82], p < 0.001), and creatinine values >1.5 mg/dl occurred during follow-up (HR 1.74 [1.24, 2.43], p < 0.001) were linked to increased risk. At multivariable analysis, increased doses of loop diuretics, advanced NYHA class, creatinine >1.5 mg/dl, and atrial fibrillation were independent predictors of adverse events. Conclusion: Long-term S/V therapy is associated with improved outcomes and renal protection in patients with HFrEF. This effect is more pronounced in patients who tolerate escalating doses. The positive effects of the drug are maintained in both CKD and preserved renal function. Future research may study the safety and underlying causes of current protection. Plain language summary Effects of sacubitril/valsartan on renal function and outcome in patients with heart failure and reduced ejection fraction: an Italian cohort study Despite the beneficial results, the influence of S/V on renal function during long-term follow-up has received little attention. We investigated the long-term effects of S/V therapy on renal function in a large cohort of patients affected by HFrEF.

Aim Echo‐derived haemodynamic classification, based on forward‐flow and left ventricular (LV) filling pressure (LVFP) correlates, has been proposed to phenotype patients with heart failure and reduced ejection fraction (HFrEF). To assess the prognostic relevance of baseline echocardiographically defined haemodynamic profile in ambulatory HFrEF patients before starting sacubitril/valsartan. Methods and results In our multicentre, open‐label study, HFrEF outpatients were classified into 4 groups according to the combination of forward flow (cardiac index; CI:< or ≥2.0 L/min/m2) and early transmitral Doppler velocity/early diastolic annular velocity ratio (E/e′: ≥ or <15): Profile‐A: normal‐flow, normal‐pressure; Profile‐B: low‐flow, normal‐pressure; Profile‐C: normal‐flow, high‐pressure; Profile‐D: low‐flow, high‐pressure. Patients were started on sacubitril/valsartan and followed‐up for 12.3 months (median). Rates of the composite of death/HF‐hospitalization were assessed by multivariable Cox proportional‐hazards models. Twelve sites enrolled 727 patients (64 ± 12 year old; LVEF: 29.8 ± 6.2%). Profile‐D had more comorbidities and worse renal and LV function. Target dose of sacubitril/valsartan (97/103 mg BID) was more likely reached in Profile‐A (34%) than other profiles (B: 32%, C: 24%, D: 28%, P < 0.001). Event‐rate (per 100 patients per year) progressively increased from Profile‐A to Profile‐D (12.0%, 16.4%, 22.9%, and 35.2%, respectively, P < 0.0001). By covariate‐adjusted Cox model, profiles with low forward‐flow (B and D) remained associated with poor outcome (P < 0.01). Adding this categorization to MAGGIC‐score and natriuretic peptides, provided significant continuous net reclassification improvement (0.329; P < 0.001). Intermediate and high‐dose sacubitril/valsartan reduced the event's risk independently of haemodynamic profile. Conclusions Echocardiographically‐derived haemodynamic classification identifies ambulatory HFrEF patients with different risk profiles. In real‐world HFrEF outpatients, sacubitril/valsartan is effective in improving outcome across different haemodynamic profiles.

Whether mutations in the BMPR2 gene may influence the response to PAH-specific therapies has not yet been investigated. In this study, in 13 idiopathic, heritable or anorexigen-associated PAH patients, in whom treatment escalation was performed by adding a prostanoid, a greater haemodynamic improvement was observed in BMPR2-negative than in BMPR2-positive patients.

Pulmonary veno‐occlusive disease (PVOD) is a rare disease. It may be idiopathic or associated, in particular, with connective tissue disease, or it may develop after radiation exposure; in heritable forms of PVOD, the inheritance is autosomal recessive due to the presence of homozygous or compound heterozygous pathogenic variants in the EIF2AK4 gene. We describe the case of a young man whose PVOD was initially misdiagnosed as chronic thromboembolic pulmonary hypertension despite worsening after riociguat, nonspecific computed tomography pulmonary angiogram findings, and parental consanguinity could suggest an autosomal recessive disease. The correct diagnosis and the correct treatment are crucial given the high mortality rate of this disease.

Galectin-3 is a circulating biomarker of fibrosis whose prognostic role in pulmonary arterial hypertension (PAH) has not been fully explored. We undertook a pilot study to evaluate the relationship between galectin-3 plasma levels and validated risk scores in PAH. The study included 70 PAH patients admitted to a single referral center from June 2016 to June 2018. Patients were stratified according to the REVEAL 2.0 risk score, according to the parameters suggested by the European Society of Cardiology and European Respiratory Society (ESC/ERS) Guidelines, and according to a focused echocardiographic assessment of right heart performance. The association between galectin-3 levels and risk profiles was evaluated by generalized linear regression model with adjustment for etiology. Galectin-3 plasma levels increased linearly in the three risk strata based on the REVEAL 2.0 score (from 16.0 ± 5.7 in low-risk to 22.4 ± 6.3 in intermediate-risk and in 26.9 ± 7.7 ng/mL in high-risk patients (p for trend < 0.001). Galectin-3 levels were significantly lower in low-risk patients defined according to the prognostic parameters of ESC/ERS Guidelines (delta between low-risk and intermediate/high-risk = −9.3, 95% CI −12.8 to −5.8, p < 0.001, p < 0.001). Additionally, galectin-3 levels were lower in the low-risk profile defined on the basis of the echocardiographic evaluation of right heart performance (delta between low-risk and intermediate-/high-risk = −6.3, 95% CI −9.9 to −2.7, p = 0.001). Galectin-3 plasma levels are directly associated with several risk profiles in PAH patients. The prognostic role of this biomarker in PAH is worthwhile to be explored in larger prospective studies.

Despite guideline-directed medical therapy for heart failure with reduced ejection fraction (HFrEF), a residual risk of adverse outcomes persists, particularly after worsening heart failure (WHF). The VICTORIA trial demonstrated the benefit of adding vericiguat in high-risk patients. However, its real-world adoption in Italy remains unclear. The aim of this study was to assess the use, safety, and prescription patterns of vericiguat in Italian patients with recent WHF. The multicenter VeriChange survey was conducted across 28 hospitals in Northern Italy. A total of 399 anonymized clinical records of HFrEF patients with recent WHF were collected. The survey included demographic, clinical, therapeutic data and safety outcomes. Overall, 68% of patients were classified as NYHA III-IV and 77% had a left ventricular ejection fraction ≤35%. Vericiguat was initiated after the first WHF episode in 54% of cases, and during hospitalization in 50%. The target dose of 10 mg/day was reached in 56% of patients. Tolerability was high, with only 3% treatment discontinuation. Prescription occurred in a context of strong adherence to guideline-based therapy. Vericiguat was introduced early and safely in Italian real-world practice, especially in tertiary and referral centers. Broader implementation and earlier WHF recognition are still needed to reduce residual risk in advanced heart failure patients.

Patients with end-stage heart failure (HF), pulmonary hypertension and elevated pulmonary vascular resistance (PVR) despite medical therapy are not eligible for heart transplantation (HTx). In this ‘proof of concept’ case series, we demonstrate the feasibility and efficacy of the MitraClip procedure as ‘bridge to list’ in end-stage HF patients not eligible for HTx. In fact, in the three patients reported, who were initially excluded from the HTx list because of elevated PVR, the MitraClip procedure was followed by a sustained improvement of PVR, allowing the patients’ risk to be reclassified, and they were then considered eligible for HTx.

Hereditary hemorrhagic telangiectasia (HTT) is an autosomal dominant disease, most frequently caused by a mutation in either ENG or ACVRL1, which can be associated with pulmonary arterial hypertension (PAH). In this report, we describe a new unpublished ACVRL1 mutation segregating in three members of the same family, showing three different types of pulmonary hypertension (PH) in the absence of BMPR2 mutations. The first patient has a form of heritable PAH (HPAH) in the absence of hepatic arteriovenous malformations (AVMs); the second one has a severe form of portopulmonary hypertension (PoPAH) associated with multiple hepatic AVMs; the third one has hepatopulmonary syndrome (HPS) with numerous hepatic arteriovenous fistulas and a form of post-capillary PH due to high cardiac output. In summary, a single mutation in the ACVRL1 gene can be associated, in the same family, with an extreme phenotypic variability regarding not only the clinical presentation of HHT but also the type of PH in the absence of BMPR2 mutations. More studies are needed to evaluate if this variability can be explained by the presence of additional variants in other genes relevant for the pathogenesis of HHT.